Inert gas

1 Thermometer ● 1 Digital Timer ● Gas pressure sensor ● Logger Pro ● Vernier computer interface ● Laptop computer ● 2 Ring stands ● 2 utility clamps ● 3 400 ml Glass beakers ● 1 Small plastic shoe container ● 6 Sprigs of Elodea ● 1 Hot plate ● 1 Small plastic pan ● Ice to fill the pan ● DI Water Method First, turn the hot plate on to start the heating process, careful not to touch it after it is on. Power on the computer and connect the gas pressure sensor to the interface…

Gas chromatography (like any other chromatography) is a separation technique in which the mobile phase is a gas. This technique is applied for the separation of volatile substances. This method separates a mixture into its components and is used to measure the concentration as well as it identifies the components. GC creates a time separation rather than physical separation which means that the components are separated in time. After they are detected, a chromatogram is generated. Each peak in…

the gas laws, there are four measurable properties (variables) of a gas. These variables are P (pressure), V (volume), T (temperature), and n (number of moles). In Boyle’s experiment, which two variables were held constant? Both the temperature (T) and the number of moles of gas (n) were held constant in Boyle’s experiment. Fill in the blanks to summarize the relationship among the gas properties in Boyle’s experiment: For a fixed _________ of gas at constant ________, the ________ of a gas…

Humanity has always searched for solutions to problems that have challenged societies for centuries. The development of science and the scientific method has given humans the ability to explore and change the environment in which humans live. However, with the emergence of geo-engineering the unknown variables can present more problems than solutions. It is understandable that humans are concerned with the radical way in which the world’s climate is changing; what is not understandable is the…

surfactants available commercially. The types of surfactants used in preparation of aqueous foam influence the foam properties (Eisner et al., 2007; Bhakta and Ruckenstein, 1995). Successful foam requires the formation, growth and stabilization of the gas bubbles in the reacting medium. The bubbles in foam can be more or less homogeneous and vary in size. The shape of bubble of the foam may be almost spherical to irregular polyhedral, based on the way in which the foam is generated and the…

METHOD AND MEASUREMENT According to the CPCB (Central pollution control board) the methods prescribed for the pollutant gases and the particulate pollutants are very sensitive ones yet percentage of errors are very less. The methods prescribed for the gases SO2, NOx and the particulate pollutants TSP, PM10 are respectively:- (i) Modified West and Gaeke method (SO₂) (ii) Modified Jacob Hochheiser method (NO₂) (iii) High Volume method (iv) Respirable dust sampler (PM₁₀) (V) Collection of data and…

The Greenhouse Effect Most people recognize global warming, but fail to recognize what is really behind it. In addition, most people would also recognize the concept of the greenhouse effect, or at least some variation of it. The fact is that the greenhouse effect is what leads to global warming, but how does that happen? Let’s start with some historical analysis of the topic. The greenhouse effect (or at least a rough version) was originally thought of and recognized by Jean Baptiste Joseph…

1.0 Introduction It is hot and humid in Malaysia throughout the year and this conditions call into question whether our normal ways of dealing with our climate (using primarily insulation and air conditioning for cooling) is the only economical and ecological approach to these climate extremes. The selection of materials for a retreat house considers sustainability as its first factor. This is attained by looking into the environmental aspects of the location of the building. This…

Pollution is one of the most serious problems that affect our environment, and its effects on all life aspects are clear to everyone. Because of this, pollution is one of the most serious issues that all the word countries are concerned about. As time goes, the pollution problem increases and also the population growth increase. The increase in demand for water and food supplies place an increasing stress on the ground and surface water quality and quantity. One of the environmental problems…

Throughout the Bronze and Iron Ages, people have discovered a useful process, we now use today, called welding. Many do not realize how important welding truly is in our world, even history, but when anyone is looking or walking around, there’s welding everywhere you go. They’re many types of welding, with different features and processes used on an object or material, that are opaque to your eyes. Oxygen acetylene (OAW) is one of the most used welds compared to others. It's used in our…